CN115487681A - Static mixed flow separation net applied to roll type membrane - Google Patents
Static mixed flow separation net applied to roll type membrane Download PDFInfo
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- CN115487681A CN115487681A CN202211038217.2A CN202211038217A CN115487681A CN 115487681 A CN115487681 A CN 115487681A CN 202211038217 A CN202211038217 A CN 202211038217A CN 115487681 A CN115487681 A CN 115487681A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D65/00—Accessories or auxiliary operations, in general, for separation processes or apparatus using semi-permeable membranes
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D61/00—Processes of separation using semi-permeable membranes, e.g. dialysis, osmosis or ultrafiltration; Apparatus, accessories or auxiliary operations specially adapted therefor
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D69/00—Semi-permeable membranes for separation processes or apparatus characterised by their form, structure or properties; Manufacturing processes specially adapted therefor
Abstract
The invention discloses a static mixed flow partition net applied to a roll-type membrane, which consists of a plurality of partition net strips, wherein the partition net strips are fixed through a partition net strip frame and are uniformly distributed along a feeding direction at equal intervals, each partition net strip consists of a plurality of partition net units, each partition net unit is provided with three fluid channels vertical to the direction of a fed fluid, the fluid is subjected to static mixed flow in the partition net units, no vortex and no turbulent flow are generated, and no fluid dead angle exists when the fluid flows through the partition net. The static mixed flow partition net of the roll-type membrane can mutually transfer the fluids near the surface of the membrane and in the center of a flow channel, change the fluid mechanical conditions of the surface of the membrane, and cannot generate vortex and turbulent flow, which is different from the prior various schemes, not only reduces the surface concentration of the intercepted substances of the membrane, increases the mass transfer rate, strengthens the fluid mixing, but also reduces the pressure drop and the pump consumption increased when the membrane runs due to the addition of the partition net while effectively reducing concentration polarization and membrane pollution, and improves the energy utilization rate.
Description
The technical field is as follows:
the invention belongs to the technical field of membrane separation, relates to a roll type membrane separation net, and particularly relates to a roll type membrane static mixed flow separation net.
Background art:
the membrane separation technology has the advantages of simple equipment, convenient operation, no phase change, high treatment efficiency, energy conservation and the like, is increasingly paid attention to as a unit operation, and has been widely applied to the fields of seawater desalination, brackish water desalination, electronic industry, food industry, medical industry, environmental protection, bioengineering and the like. However, during use, one of the main problems is that the permeate flux decreases with time, which has an impact on the following factors: (1) concentration polarization causes solute on the surface of the membrane to diffuse to the bulk solution, so that resistance is formed, and permeation flow is reduced; (2) the interaction between the separated solute and the membrane or the concentration on the membrane surface is higher than the solubility, so that the solute is adsorbed or deposited on the membrane surface or in the membrane pores, namely the membrane is polluted, and the permeation flux of the membrane is reduced. Concentration polarization and membrane fouling have always restricted the development and application of membrane technology, not only has the membrane separation efficiency reduced, but also has the membrane service life greatly shortened.
In order to reduce the influence of concentration polarization and membrane pollution, various measures and control methods can be adopted, such as raw material liquid pretreatment, membrane surface modification, membrane surface hydromechanical condition change, additional field strengthening, membrane cleaning, membrane structure change and the like, wherein the addition of a separation net to change the membrane surface hydromechanical condition is a common and effective method. The feed liquid separation net can help feed liquid to create a uniform fluid channel, and by increasing the shearing rate of a feed liquid flow channel and mixing fluid in a direction vertical to the surface of the membrane, trapped substances close to the surface of the membrane are reduced, the increase of the mass transfer rate is realized, and the membrane pollution rate is reduced.
The existing domestic flow-guiding separation net used for the external spiral wound membrane element mostly adopts a wound or stacked net rib structure, and the net ribs are arranged in a rectangular or rhombic shape. The structure of the membrane element is composed of thicker longitudinal ribs along the direction of a flow channel and thinner transverse ribs transversely clamped in the flow channel, all the flow channels are paved with one layer to form a flow guide separation net, but dead angles are formed at the contact positions of four corners of meshes and a membrane surface, so that the deposition and the pollution blockage of raw material liquid solute are easily caused, and the actual use area of the membrane element is reduced due to the close contact of the transverse ribs and the membrane surface. Therefore, the Chinese patent CN201906567U provides a technical scheme that a transverse rib clamped between longitudinal ribs is shifted to the middle part of the longitudinal rib from the side deviated to a flow channel, so that the transverse rib is not contacted with the surface of a film; chinese patent CN202151550U and Chinese patent CN202155150U provide a technical scheme, which can reduce the pollution deposition at four corners of mesh by reducing membrane surface contact, increasing radial flow, and widening thickened flow channels; chinese patent CN102600728B provides an X rotational flow spiral-wound membrane diversion and isolation net which is composed of a flow channel formed by a plurality of layers of longitudinal ribs and has no transverse ribs, and the secondary flow promoting effect of the X rotational flow promotes laminar flow disturbance to be converted into turbulent flow, thereby enhancing the driving force of solute diffusion and the mass transfer effect.
However, the existing flow guide separation net effectively reduces concentration polarization and membrane pollution, improves mass transfer, and increases pressure drop and pump consumption during membrane operation.
The invention content is as follows:
in view of the above, the technical problem to be solved by the present invention is to provide a rolling membrane static flow mixing spacer, which enables fluids near the membrane surface and at the center of the flow channel to migrate, changes the hydrodynamic condition of the membrane surface, enhances the fluid mixing, and improves the energy utilization rate.
The purpose of the invention is realized by the following technical scheme:
a static mixed flow partition net applied to a roll-type membrane is characterized in that: the device consists of a plurality of mutually parallel separation net strips, wherein the separation net strips are vertical to the direction of a fed fluid, and two ends of each separation net strip are fixed on a separation net strip frame with a clamping groove; the net separating frame is parallel to the direction of the feeding fluid, each net separating strip consists of a plurality of net separating units, the net separating units and the net separating units are attached to each other in pairs, each net separating unit consists of an upper half part and a lower half part, the upper half part of each net separating unit consists of a rear panel, two front baffles, a front inclined baffle and two side panels, the two front baffles are divided into a left baffle and a right baffle which are perpendicular to the direction of the feeding fluid, a certain included angle is formed between the inclined baffles and the direction of the feeding fluid, the side panels are parallel to the direction of the feeding fluid, the baffles and the side panels are combined in a shape of a Chinese character 'ji' according to the sequence of the left baffle, the left side panel, the front inclined baffle, the right side panel and the right baffle, the rear panel is perpendicular to the front baffles and the side panels and is parallel to the direction of the feeding fluid, and the left baffle, the right baffle and the bottom of the side panels are tightly connected; the lower half part of the separation net unit consists of a front panel, two baffles, a rear inclined baffle and two side plates, wherein the left baffle, the right baffle and the rear baffle are perpendicular to the direction of the feeding fluid, the inclined baffle and the direction of the feeding fluid form a certain included angle, the side plates are parallel to the direction of the feeding fluid, the baffles and the side plates are combined in a shape like a Chinese character 'ji' according to the sequence of the left baffle, the left side plate, the rear inclined baffle, the right side plate and the right baffle, and the front panel is perpendicular to the baffles and the side plates and is tightly connected with the left baffle and the right baffle; the upper half part of the screen unit and the lower half part of the screen unit are reversely symmetrical relative to the panel; the left side plate of the upper half part of the separation net unit and the left side plate of the lower half part of the separation net unit jointly form a left side plate, the right side plate of the upper half part of the separation net unit and the right side plate of the lower half part of the separation net unit jointly form a right side plate, and the right side plate and the front inclined baffle of the upper half part of the separation net unit and the left baffle and the right baffle of the lower half part of the separation net unit jointly form a central fluid channel.
The static mixed flow refers to two flow modes when fluid passes through the screen separation unit, wherein one mode is that the fluid passing through the upper surface of the front panel of the screen separation unit enters the lower surface of the rear panel of the screen separation unit through fluid channels at two sides of the screen separation unit, and the other mode is that the fluid passing through the lower surface of the front panel of the screen separation unit enters the upper surface of the rear panel of the screen separation unit through a central fluid channel of the screen separation unit.
The baffle width and curb plate length, the panel height are equal, mark as t, separate the length that the baffle was controlled to net unit first half, baffle and rearmounted baffle about the latter half are equal, mark as A, separate the height that the baffle was controlled to net unit first half, baffle and rearmounted baffle about the latter half are equal, mark as B, the interval mark between the curb plate is C about, the interval mark of leading panel and rearmounted panel is D, the length and the width that separate the net unit mark respectively are E and F, satisfy the relation: t = 0.5-1.5mm, A =3 t-5t, B = 2t-4t, C = 4t-7t, D = 2t-5t, E =2A + C, F =2B + t.
Compared with the prior art, the invention has the following advantages:
the static mixed flow separation net applied to the roll-type membrane can mutually transfer the fluids near the surface of the membrane and at the center of a flow channel, change the fluid mechanics condition of the surface of the membrane, avoid vortex and turbulence, and avoid fluid dead corners when the fluid flows through the separation net. In addition, the arrangement of the inclined baffle plate can greatly increase the area of the central flow passage and reduce the mass transfer resistance. Therefore, the separation net not only reduces the surface concentration of substances intercepted by the membrane, increases the mass transfer rate, strengthens fluid mixing, but also reduces the pressure drop and pump consumption increased when the membrane runs due to the addition of the separation net while effectively reducing concentration polarization and membrane pollution, and improves the energy utilization rate.
Description of the drawings:
the invention is further illustrated with reference to the following figures and examples:
FIG. 1 is a schematic view of a static flow mixing screen;
FIG. 2 is a schematic view of the direction of fluid flow in the screen unit;
3-6 three-dimensional model diagrams of mesh-separating units;
the device comprises a screen strip 1, a screen unit 2, a screen strip frame 3, a screen strip frame 4, a screen strip frame clamping groove 5, a screen unit front panel 6, a screen unit rear panel 6, a screen unit lower half part left and right baffle 7, a screen unit upper half part left and right side plate 8, an inclined baffle 9, a screen unit two-side fluid channel 10 and a screen unit central fluid channel 11, wherein arrows indicate the flowing direction of fluid.
The specific implementation mode is as follows:
a static mixed flow partition net applied to a roll-type membrane is characterized in that: the device consists of a plurality of mutually parallel separation net strips, wherein the separation net strips are vertical to the direction of a fed fluid, and two ends of each separation net strip are fixed on a separation net strip frame with a clamping groove; the net separating frame is parallel to the direction of the feeding fluid, each net separating strip consists of a plurality of net separating units, the net separating units and the net separating units are attached to each other in pairs, each net separating unit consists of an upper half part and a lower half part, the upper half part of each net separating unit consists of a rear panel, two front baffles, a front inclined baffle and two side panels, the two front baffles are divided into a left baffle and a right baffle which are perpendicular to the direction of the feeding fluid, a certain included angle is formed between the inclined baffles and the direction of the feeding fluid, the side panels are parallel to the direction of the feeding fluid, the baffles and the side panels are combined in a shape of a Chinese character 'ji' according to the sequence of the left baffle, the left side panel, the front inclined baffle, the right side panel and the right baffle, the rear panel is perpendicular to the front baffles and the side panels and is parallel to the direction of the feeding fluid, and the left baffle, the right baffle and the bottom of the side panels are tightly connected; the lower half part of the separation net unit consists of a front panel, two baffles, a rear inclined baffle and two side plates, wherein the left baffle, the right baffle and the rear baffle are perpendicular to the direction of the feeding fluid, the inclined baffle and the direction of the feeding fluid form a certain included angle, the side plates are parallel to the direction of the feeding fluid, the baffles and the side plates are combined in a shape like a Chinese character 'ji' according to the sequence of the left baffle, the left side plate, the rear inclined baffle, the right side plate and the right baffle, and the front panel is perpendicular to the baffles and the side plates and is tightly connected with the left baffle and the right baffle; the upper half part of the net separating unit and the lower half part of the net separating unit are reversely symmetrical relative to the panel; the left side plate of the upper half part of the screen unit and the left side plate of the lower half part of the screen unit jointly form a left side plate, the right side plate of the upper half part of the screen unit and the right side plate of the lower half part of the screen unit jointly form a right side plate, and a central fluid channel is formed by the right side plate, the front inclined baffle of the upper half part of the screen unit and the left baffle of the lower half part of the screen unit;
when the fluid passes through the screen unit, two flow modes are provided, one is that the fluid passing through the upper surface of the front panel of the screen unit enters the lower surface of the rear panel of the screen unit through the fluid channels at two sides of the screen unit, and the other is that the fluid passing through the lower surface of the front panel of the screen unit enters the upper surface of the rear panel of the screen unit through the central fluid channel of the screen unit. The fluid is statically mixed in the screen unit without generating vortex and turbulence.
Example 1
One spacer mesh unit size was selected as shown in the table.
The size of 13 separation net units forms a separation net strip, the size of 13 separation net strips forms a separation net, the separation net is arranged on a polyether sulfone ultrafiltration membrane with the length of 19cm and the width of 14cm, and glucan (important raw materials in the industries of medicines, foods, cosmetics and the like) is used as a solute to carry out testing on a membrane testing device. The test pressure was 120kPa, and the glucan concentration was 5.0kg/m 3 And compared with a conventional screen. The experimental results show that static mixed flow spacer mesh has the same effect as the conventional spacer mesh in the membrane process at the same pump consumptionThe mass transfer coefficient after adopting the static mixed flow separation net is improved by nearly 42 percent compared with the conventional separation net in the process of the membrane with the lowest pump consumption by similar or higher mass transfer performance.
Example 2
One spacer mesh unit size was selected as shown in the table.
The size of 13 separation net units forms a separation net strip, the size of 13 separation net strips forms a separation net, the separation net is arranged on a polyether sulfone ultrafiltration membrane with the length of 19cm and the width of 14cm, and glucan (important raw materials in the industries of medicines, foods, cosmetics and the like) is used as a solute to carry out testing on a membrane testing device. The test pressure was 120kPa, and the glucan concentration was 5.0kg/m 3 And compared with conventional spacer screens. The experimental result shows that in the membrane process under the same pump consumption, the static mixed flow separation net has similar or higher mass transfer performance compared with the conventional separation net, and in the membrane process under the lowest pump consumption, the mass transfer coefficient after the static mixed flow separation net is adopted is improved by nearly 36 percent compared with the conventional separation net.
Example 3
One spacer mesh unit size was selected as shown in the table.
The size of 13 separation net units forms a separation net strip, the size of 13 separation net strips forms a separation net, the separation net is arranged on a polyether sulfone ultrafiltration membrane with the length of 19cm and the width of 14cm, and glucan (important raw materials in the industries of medicines, foods, cosmetics and the like) is used as a solute to carry out testing on a membrane testing device. The test pressure was 120kPa, and the glucan concentration was 5.0kg/m 3 And compared with conventional spacer screens. The experimental result shows that the static mixed flow separation net has similar or higher mass transfer performance compared with the conventional separation net in the membrane process under the same pump consumption, and the static mixed flow separation net adopts static mixed flow separation net compared with the conventional separation net in the membrane process under the lowest pump consumptionThe mass transfer coefficient after flowing through the separation net is improved by nearly 51 percent.
Example 4
One spacer mesh unit size was selected as shown in the table.
The size of 16 separation net units forms a separation net strip, 15 separation net strips form a separation net, the separation net is arranged on an aromatic polyamide composite nanofiltration membrane with the length of 21cm and the width of 18cm, and a membrane test device is used for testing by taking heavy metal wastewater as feed liquid. The test pressure is 1.2MPa, the temperature is 25 ℃, and the ion content in the heavy metal wastewater is Cu 2+ 100mg/L、Ni 2+ 40mg/L、Pb 2+ 10mg/L、Zn 2+ 20mg/L and compared with a conventional spacer mesh. The experimental result shows that in the membrane process under the same pump consumption, the static mixed flow separation net has higher mass transfer performance compared with the conventional separation net, and in the membrane process under the lowest pump consumption, the mass transfer coefficient after the static mixed flow separation net is adopted is improved by nearly 58 percent compared with the conventional separation net.
Example 5
One spacer mesh unit size was selected as shown in the table.
The size of 16 separation net units forms a separation net strip, 15 separation net strips form a separation net, the separation net is arranged on an aromatic polyamide composite nanofiltration membrane with the length of 21cm and the width of 18cm, and the membrane test device is used for testing by taking heavy metal wastewater as feed liquid. The testing pressure is 1.2MPa, the temperature is 25 ℃, and the ion content in the heavy metal wastewater is Cu 2+ 100mg/L、Ni 2+ 40mg/L、Pb 2+ 10mg/L、Zn 2+ 20mg/L, and compared with a conventional separation net. The experimental result shows that the static mixed flow separation net has higher mass transfer performance compared with the conventional separation net in the membrane process under the same pump consumption, and has higher mass transfer performance compared with the conventional separation net in the membrane process under the lowest pump consumptionCompared with the static mixed flow separation net, the mass transfer coefficient is improved by nearly 79 percent.
Example 6
One spacer mesh unit size was selected as shown in the table.
The size of 16 separation net units forms a separation net strip, 15 separation net strips form a separation net, the separation net is arranged on an aromatic polyamide composite nanofiltration membrane with the length of 21cm and the width of 18cm, and the membrane test device is used for testing by taking heavy metal wastewater as feed liquid. The test pressure is 1.2MPa, the temperature is 25 ℃, and the ion content in the heavy metal wastewater is Cu 2+ 100mg/L、Ni 2+ 40mg/L、Pb 2+ 10mg/L、Zn 2+ 20mg/L, and compared with a conventional separation net. The experimental result shows that in the membrane process under the same pump consumption, compared with the conventional separation net, the static mixed flow separation net has similar or higher mass transfer performance, and in the membrane process under the lowest pump consumption, compared with the conventional separation net, the mass transfer coefficient after the static mixed flow separation net is adopted is improved by nearly 64 percent.
Example 7
One spacer mesh unit size was selected as shown in the table.
The size of 10 screen units forms a screen strip, 11 screen strips form a screen, the screen is arranged on a cellulose acetate reverse osmosis membrane with the length of 16cm and the width of 12cm, and a test is carried out on a membrane test device by taking simulated seawater as a feed liquid. The test pressure is 3MPa, and the simulated seawater contains 20g/L of NaCl and MgCl 2 2g/L、MgSO 4 3g/L、CaCl 2 1g/L, KCl0.8g/L and is compared with a conventional separation net. The experimental result shows that the static mixed flow separation net has similar or higher mass transfer performance compared with the conventional separation net in the membrane process under the same pump consumption, and is in phase with the conventional separation net in the membrane process under the lowest pump consumptionCompared with the static mixed flow separation net, the mass transfer coefficient is improved by nearly 41 percent.
Example 8
One spacer mesh unit size was selected as shown in the table.
The size of 13 separation net units forms a separation net strip, the size of 13 separation net strips forms a separation net, the separation net is arranged on a polyether sulfone ultrafiltration membrane with the length of 19cm and the width of 14cm, and a test is carried out on a membrane test device by taking simulated seawater as a feed liquid. The test pressure is 3MPa, and the simulated seawater contains 20g/L of NaCl and MgCl 2 2g/L、MgSO 4 3g/L、CaCl 2 1g/L, KCl0.8g/L and is compared with a conventional separation net. The experimental result shows that in the membrane process under the same pump consumption, the static mixed flow separation net has similar or higher mass transfer performance compared with the conventional separation net, and in the membrane process under the lowest pump consumption, the mass transfer coefficient after the static mixed flow separation net is adopted is improved by nearly 52 percent compared with the conventional separation net.
Example 9
One spacer mesh unit size was selected as shown in the table.
The size of 13 separation net units forms a separation net strip, the size of 13 separation net strips forms a separation net, the separation net is arranged on a polyether sulfone ultrafiltration membrane with the length of 19cm and the width of 14cm, and a test is carried out on a membrane test device by taking simulated seawater as a feed liquid. The testing pressure is 3MPa, and the simulated seawater contains 20g/L of NaCl and MgCl 2 2g/L、MgSO 4 3g/L、CaCl 2 1g/L, KCl0.8g/L and is compared with a conventional separation net. The experimental result shows that in the membrane process under the same pump consumption, the static mixed flow separation net has similar or higher mass transfer performance compared with the conventional separation net, and in the membrane process under the lowest pump consumption, the mass transfer coefficient after the static mixed flow separation net is adopted is improved by nearly 31 percent compared with the conventional separation net。
The static mixed flow partition net of the roll-up membrane can mutually transfer the fluids near the surface of the membrane and in the center of a flow channel, change the fluid mechanical conditions of the surface of the membrane, and cannot generate vortex and turbulent flow, which is different from the prior various schemes, not only reduces the surface concentration of substances intercepted by the membrane, increases the mass transfer rate, strengthens the fluid mixing, but also reduces the pressure drop and pump consumption increased during the membrane operation caused by the addition of the partition net while effectively reducing concentration polarization and membrane pollution, and improves the energy utilization rate.
The above-described embodiments are intended to illustrate the present invention, not to limit the present invention, and any modifications and changes made within the spirit of the present invention and the scope of the claims fall within the scope of the present invention.
Claims (5)
1. A static mixed flow partition net applied to a roll-type membrane is characterized in that: the device consists of a plurality of parallel separation net strips, the separation net strips are vertical to the direction of feed fluid, and two ends of each separation net strip are fixed on a separation net strip frame with a clamping groove; the net separating frame is parallel to the direction of the feeding fluid, each net separating strip consists of a plurality of net separating units, the net separating units and the net separating units are attached to each other in pairs, each net separating unit consists of an upper half part and a lower half part, the upper half part of each net separating unit consists of a rear panel, two front baffles, a front inclined baffle and two side panels, the two front baffles are divided into a left baffle and a right baffle which are perpendicular to the direction of the feeding fluid, a certain included angle is formed between the inclined baffles and the direction of the feeding fluid, the side panels are parallel to the direction of the feeding fluid, the baffles and the side panels are combined in a shape of a Chinese character 'ji' according to the sequence of the left baffle, the left side panel, the front inclined baffle, the right side panel and the right baffle, the rear panel is perpendicular to the front baffles and the side panels and is parallel to the direction of the feeding fluid, and the left baffle, the right baffle and the bottom of the side panels are tightly connected; the lower half part of the separation net unit consists of a front panel, two baffle plates, a rear inclined baffle plate and two side plates, wherein the left baffle plate, the right baffle plate and the rear baffle plate are perpendicular to the direction of the fed fluid, the inclined baffle plate and the direction of the fed fluid form a certain included angle, the side plates are parallel to the direction of the fed fluid, the baffle plates and the side plates are combined in a shape like a Chinese character 'ji' according to the sequence of 'the left baffle plate, the left side plate, the rear inclined baffle plate, the right side plate and the right baffle plate', the front panel is perpendicular to the baffle plates and the side plates, and is tightly connected with the left baffle plate and the right baffle plate; the upper half part of the screen unit and the lower half part of the screen unit are reversely symmetrical relative to the panel; the left side plate of the upper half part of the separation net unit and the left side plate of the lower half part of the separation net unit jointly form a left side plate, the right side plate of the upper half part of the separation net unit and the right side plate of the lower half part of the separation net unit jointly form a right side plate, and the right side plate and the front inclined baffle of the upper half part of the separation net unit and the left baffle and the right baffle of the lower half part of the separation net unit jointly form a central fluid channel.
2. The static mixed flow separation net applied to the roll-type membrane according to claim 1, which is characterized in that: the clamping grooves of the net separating strip frame are used for fixing the net separating strips at equal intervals, and the net separating strips are uniformly distributed along the feeding direction.
3. The static mixed flow separation net applied to the roll-type membrane according to claim 1, which is characterized in that: the front inclined baffle plate on the upper half part of the screen unit forms an included angle of 135-165 degrees with the direction of the feeding fluid, and the rear inclined baffle plate on the lower half part of the screen unit forms an included angle of 15-45 degrees with the direction of the feeding fluid.
4. The static mixed flow separation net applied to the roll-type membrane according to claim 1, which is characterized in that: the screen separation units are symmetrical, and the left baffle and the left side plate of the screen separation unit have the same size as the right baffle and the right side plate thereof respectively; leading inclined baffle is the rhombus, and the baffle, separates net unit the latter half curb plate and panel all are cuboid or square about, separates net unit the first half curb plate and is that the base is right trapezoid's quadrangular.
5. The static mixed flow separation net applied to the roll-type membrane according to claim 1, which is characterized in that: baffle width, curb plate length and panel height are equal, mark as t, separate baffle length about the net unit the first half, baffle length and panel width are equal about the latter half, mark as A, separate baffle height about the net unit the first half, baffle height and rearmounted baffle height are equal about the latter half, mark as B, the interval mark between the curb plate of controlling is C, the interval mark of leading panel and rearmounted panel is D, the length and the width that separate the net unit mark respectively are E and F, satisfy the relation: t = 0.5-2m, A = 2.5t-4t, B = 2t-3t, C = 5t-6t, D = 1-3t, E =2A + C, F =2A + D.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211038217.2A CN115487681A (en) | 2022-08-29 | 2022-08-29 | Static mixed flow separation net applied to roll type membrane |
| PCT/CN2023/100376 WO2024045769A1 (en) | 2022-08-29 | 2023-06-15 | Static mixed-flow separation net applied to spiral wound membrane |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211038217.2A CN115487681A (en) | 2022-08-29 | 2022-08-29 | Static mixed flow separation net applied to roll type membrane |
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| CN115487681A true CN115487681A (en) | 2022-12-20 |
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| WO2024045769A1 (en) * | 2022-08-29 | 2024-03-07 | 中南大学 | Static mixed-flow separation net applied to spiral wound membrane |
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| CN103566768B (en) * | 2013-10-22 | 2015-08-26 | 中国航天员科研训练中心 | A kind of filter improving rolled membrane module anti-pollution ability |
| CN104492269B (en) * | 2015-01-11 | 2016-05-04 | 中南大学 | The static mixed flow filter of rolled film |
| CN104524979B (en) * | 2015-01-11 | 2016-03-23 | 中南大学 | The static mixed flow filter of rolled film |
| EP3439770B1 (en) * | 2016-04-05 | 2022-03-23 | King Abdullah University Of Science And Technology | Fouling resistant membrane spacers |
| CN215086203U (en) * | 2020-12-16 | 2021-12-10 | 三达膜科技（厦门）有限公司 | Dense water side of formula of book membrane separates net |
| CN115487681A (en) * | 2022-08-29 | 2022-12-20 | 中南大学 | Static mixed flow separation net applied to roll type membrane |
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| WO2024045769A1 (en) * | 2022-08-29 | 2024-03-07 | 中南大学 | Static mixed-flow separation net applied to spiral wound membrane |
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